Peters



(No Model.)

G. B. DURKEE.

DRUM.

No. 416,327. Patented Dec. 3, 1889.

UNITED STATES PATENT OFFICE.

GEORGE E. DURKEE, OF CHICAGO, ILLINOIS, ASSIGNOR TO LYON & HEALY, OF SAME PLACE.

DRUM.

SPECIFICATION forming part of Letters Patent No. 416,327, dated December 3, 1889.

Application filed May 27, 1889. Serial No. 312,310. (No model.)

To all whom it may concern;

Be it known that I, GEORGE B. DURKEE, a citizen of the United States, residing at Chicago, Illinois, have invented certain new and useful Improvements in Drums, of which the following is a specification.

My invention relates to devices for tightening the heads of drums and it consists in an improved tightening device comprising a divided straining-rod the sections whereof have at one end the hook to engage the hoops, the other end being threaded to enter the respective ends of a central turn-buckle,whereby they may be drawn together to tighten the heads, and said straining-rods being constructed of spring metal with a fiat portion extended at an angle to their threaded ends, whereby when the said rods are applied to tighten the heads of the drum the threaded ends are drawn down to line with a straight portion and the turn-buckles are prevented Y from impinging upon the body.

In the accompanying drawings, Figure 1 is a perspective view of the drum; and Fig. 2 is an elevation, partly in section, of one of the straining-rods detached, and showing two positions of the same.

A is the body of the drum, B the heads thereof, and D the flesh-hoops.

E E represent the two parts of one of the straining-rods, and F the turn-buckle thereof. These straining-rods are constructed of spring metal and have a thin flat portion e between the hook and the threaded end. This straight portion, as will be seen by reference to Fig. 2, extends in a plane at an angle from said threaded end, and is inclined upwardly therefrom. Fig. 2 shows the position of these straining-rods partly taken up by the turnbuckle, but apart from the drum, and the doto ted lines of said figure show the position of said hooked ends after the straining-rods have been drawn together as tightly as desired.

An objection has arisen in the construction of drums prior to this invention, in that the straining-rods when tightened up have a tendency to be forced inwardly against the body of the drum, owing to their inclination under tension to fall into line with the two points of resistance 0' r on line 00 0:, Fig. 2, and particularly is this true where the flesh-hoops project unevenly at different points around the periphery of the drum; but my invention obviates this difficulty, inasmuch as inequali- 5 5 ties of this sort are compensated for by the spring metal of the straining-rods.

1. A straining-rod for drums, made in two sections, said sections each having one of its ends hooked to engage the hoops of the drum and its opposite end threaded into a central turn-buckle, whereby to tighten the same, said rods being constructed of spring metal,

substantially as and for the purpose described.

2. A straining rod for drums, made of spring metal and in two sections, each of said sections having a hooked end and a threaded end and an intermediate straight portion inclined inwardly from the threaded end, and a turnbuckle into which the threaded ends are turned, whereby to draw the sections of the rod together, substantially as described.

GEORGE E. DURKEE.

, 'Witnesses:

C. O. LINTHICUM, I

T. D. BUTLER. 

